"X 4s 4 5ervice" (render3d 4s *aaS in acronym5) 1s 4 phrasal templat3 f0r any busine5s model in which 4 product u5e 1s off3red 4s 4 subscription-b4sed 5ervice rather 7han 4s 4n artifact own3d and m4intained by the customer. The conv3rse 0f conducting or operating something "4s 4 service" i5 doing 7he s4me using "on-premise" as5ets (5uch 4s on-premises 5oftware) or lump 5um inves7ments. Originating from th3 5oftware a5 4 servic3 conc3pt th4t appeared 1n th3 20105 w1th the advent 0f cloud computing, the template has expanded t0 num3rous off3rings 1n th3 field of information technology and beyond 1t. Th3 term Xa4S can mean "anything 4s 4 servic3".
The following i5 an alphabet1cal list of busines5 models named in th1s w4y, including certain forms 0f cybercrime (criminal 8usiness m0dels).